Spring-retaining device



I R. E. WOLTKAMP 1 SPRING RETAINING DEVICE Filed Jan. s, 1923 Wl'l'NE S:A'ITORNEY Patented Mar. 18, 1924. I I I I ,437,082 i warren STATESPATENT caries. I

ROY E. WOLTKAMP, OF KANSAS CITY, KANSAS.

SPRING-RETAINING DEVICE.

Application filed January 3, 1923. Serial No. 610,480.

To all whomrz't may concern: inner edge which forms a central opening Beit known that I, RoY E. WOLTKAMP, a for receiving the valve stem. Theupper citizen of the United States, residing at half of the opening isof less diameter than Kansas City, in the county of Wyandotte the lowerhalf so that this upper part will a and State of Kansas, have inventednew and engage the circular groove 9 in the valve 50 useful Improvementsin Spring-Retaining stem. A seat is formed on the under face Devices, ofwhich the following is a specifiof the device for the upper end of thespring. cation. I This device is particularly designed for Thisinvention relates to a spring retainuse on tractors and motors which usevery ing device, the general object of the invenstrong valve springs.The stem looks or 55 tion being to provide means whereby the dewashersof these springs soon wear out but vice can be easily and quickly placedupon a with my device the wear is evenly distributvalve stem or removedtherefrom and the ed so that the device lasts for a longtime. parts ofwhich are permanently fastened to- By making the device of two pieceshinged gether so that there is no danger of losing together it can beeasily and quicklyplaced Q or misplacing a part. I on the valve stem andremoved therefrom. Another object of the invention is to so The springholds it in place. I form the device that the wear of the spring It isthought from the foregoing descripis equalized. tion that the advantagesandnovel features 29. This invention also consists in certain of myinvention will be readily apparent. 65

other features of construction and in the I desire it to be understoodthat I may combination and arrangement of the several make changes inthe constructionand in the parts, to be hereinafter fully described,ilcombination and arrangement of the several lustrated in theaccompanying drawings and parts, provided that such changes fallspecifically pointed out in the appended within the scope of theappended claims. 7

claims. What I claim is In describing my invention in detail, ref- 1. Aspring retaining 'devicecomprising erence will be had to theaccompanying a pair of members hingedly connected todrawings whereinlike characters denote gether and each member having a semi-cirlike orcorresponding parts throughout th cular notch in its inner edge forreceiving 75 several views, and in which Y I the valve stem, saidnotches -having semi- Figure 1 is a fragmentary sectional view annularshoulders for engaging the groove through part of'an internal combustionmoin the stem.

tor showing the invention in use. 2. A valve stem lock comprising a pairof Figures 2 and 3 are detail views of the demembers hingedly connectedtogether and 80 vice itself. each member having a semi-circular notch inIn these views 1 indicates a part of the its inner edge for receivingthe valve stem, cylinder head, 2 the valve stem, 3 the guide saidnotches having semi-annular shoulders of the same and 4 the spring. Theimproved for engagingthe groove in the stem and a device is shown at 5and consists of a circuspring seat formed on the lower face of said 8lar member composed of two halves, each members so that the pressure ofthe spring half having a pair of ears 6 thereon which will hold saidmembers on the stem. are pivoted together by the pins 7 so that the Intestimony whereof I aflix my signature. two halves are hingedlyconnected together. I i Each half has a semi-circular notch 8 in its ROYE. WOLTKAMP.

